I fully agree with you on the Digic 5 Processor. They are SO fast.
That said... same AF? I might be mistaken, but doesn't the T4i only has 1 crosstype AF point - just like the T3i? the 60D has 9.
The 60D also has some weather/dust sealing and a LCD display on top - which for me is pretty important, if anything because I'm used to it, and it doesn't require the same amount of battery as it takes to show the same information on the rear display - thus greater battery life (which it already gets due to it's battery - which already has seemingly twice the life to begin with)
I also prefer the 60D's viewfinder to the t3i (which as far as I know, is exactly the same as the T4i).
But really, for video, none of that matters, and they're pretty much exactly the same for that outside of the Digic 5 so whatever. lol.
Have a nice day, Bluename.